CYP2D6 and Atypical behavior: Berel et al. [11] reported four cases of children (1: CYP1A2 *1F/*1F (UM), 2: CYP2D6 *1/*41 (IM) CYP3A5 *1/*1, 3: CYP2C9 *1/*3 (IM), 4: CYP1A2 *1/*1F (UM)) presenting with behavioral disorders of various causes.